FOSLINK FSP2151UAAD Dual 150ma high performance mobile ldotm in usp6 Datasheet

DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6
FSP2151
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FEATURES
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180mV Typical Dropout with 150mA Load
±2.0% Voltage Accuracy
High PSRR: 70dB@100Hz
Low noise output
Current Limit
Thermal Shutdown Protection
Short Circuit Protection
Very small USP6 Package
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APPLICATIONS
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Cellular Handsets
Portable Electronics, PDA
Wireless Devices, LAN
Computer Peripherals
Camera Module
GPS Receiver
The dual LDO FSP2151 series of positive voltage
linear regulators feature high output voltage accuracy,
low quiescent current and low dropout voltage, making
them ideal for battery powered applications. The line
transient response and load transient response are
excellent. Their high PSRR make them useful in
applications where AC noise on the input power supply
must be suppressed. Space-saving USP6 package for
2ch LDOs is attractive for portable and handheld
applications. They have both thermal shutdown and a
current limit feature to prevent device failure under
extreme operating conditions. They are stable with an
output capacitance of 2.2uF or greater.
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PIN CONFIGURATION
GENERAL DESCRIPTION
(Bottom View)
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PIN DESCRIPTION
Pin Number
Pin Name
1
EN2
2
VDD
3
EN1
4
GND
5
VOUT1
6
VOUT2
Pin Function
Enable pin for LDO2. Connect EN2 to IN or to a logic high for normal
operation, drive EN2 to G or a logic low to disable the regulator. Do not
leave EN2 floating.
Input Voltage. Bypass this pin with a 1µF capacitor connected to G, placed
as close to the IC as possible.
Enable pin for LDO1. Connect EN1 to IN or to a logic high for normal
operation, drive EN1 to G or a logic low to disable the regulator. Do not
leave EN1 floating.
Ground.
LDO1 Output. Bypass this pin with a 1µF capacitor connected to G. OUT1 is
actively discharged to G through 800Ω when disabled.
LDO2 Output. Bypass this pin with a 1µF capacitor connect to G. OUT2 is
actively discharged to G through 800Ω when disabled.
2007-7-4
DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6
FSP2151
„
ABSOLUTE MAXIMUM RATINGS
Parameter
Input Voltage
Output Pin Voltage
Rating
6
Unit
V
GND-0.3 to VIN + 0.3
V
Output Current
150/150
mA
Internal Power Dissipation)
100
mW
ESD Rating(HBM)
2000
V
Operating Junction Temperature
-40 to 125
°C
Operating Ambient Temperature
-40 to 85
°C
Storage Temperature
-40 to 125
°C
Lead Temperature (Soldering, 5 sec)
300
Note: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired
„
°C
ELECTRICAL CHARACTERISTICS
(VIN = VOUT + 1V, EN1 =EN2= IN, CIN = 2.2F, COUT = 2.2F, TA= 25°C unless otherwise specified.)
Parameter
Test Conditions
Min
Typ
Max
Unit
Input Supply Range
Note 1
5.5
V
EN Input Voltage
0
VIN
V
-2.0
+2.0
%
Output Voltage Accuracy
IO=1mA
Note 2
mA
Quiescent Current
Output Current
IO=0mA
175
250
µA
Shutdown Supply Current
Short Circuit Current
Both outputs disabled
0.1
1
µA
VO= 0V
150
Ground Pin Current
IO=0mA to 150mA
200
250
µA
-0.15
0.1
0.15
%/V
-2
1.0
2
%/mA
Line Regulation
Load Regulation
Power Supply Ripple
Rejection
150
IO=50mA VIN = 3.0V to 4.0V
VO= 1.8V
IO=50mA VIN = 3.5V to 4.5V
VO= 2.5
IO=50mA VIN = 3.8V to 4.8V
VO= 2.8V
IOUT = 1mA to 150mA VIN= 3.3V
IO=50mA VO = 1.8V
f= 100Hz
70
f= 1KHz
63
f= 10KHz
mA
dB
45
VOUT = 1.8V, IOUT = 150mA
950
VOUT = 2.5V, IOUT = 150mA
350
VOUT = 2.8V, IOUT = 150mA
180
Current Limit
VOUT ≥1.2V
200
mA
Dropout Voltage
mV
Output Noise
f= 10Hz to 100KHz
35
uVrms
Over Temperature Hystersis
IO=1mA
40
°C
Over Temperature Shutdown
IO=1mA
155
°C
EN_ Logic Low Threshold
0.3
EN_ Logic High Threshold
1.5
EN Pull-up Resistance
1.7
V
V
5
15
mΩ
Temperature Coefficient
40
ppm/°C
Note 1:The minimum input voltage of the FSP2151 is determined by output voltage and dropout voltage. The
minimum input voltage is defined as:
VIN(MIN)=VO+VDROP
Note 2:Output current is limited by PD, maximum IO=PD/(VIN(MAX)-VO)
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2007-7-4
DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6
FSP2151
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FUNCTIONAL BLOCK DIAGRAM
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TYPICAL APPLICATION CIRCUIT
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APPLICATION INFORMATION
Capacitor Selection and Regulator Stability
Similar to any low dropout regulator, the external capacitors used with the FSP2151 must be carefully selected for
regulator stability and performance.
Using a capacitor, CIN, whose value is>2.2μF at the FSP2151 input pin, the amount of the capacitance can be
increased without limit. Please note that the distance between CIN and the input pin of the FSP2151 should not
exceed 0.5 inch. Ceramic capacitors are suitable for the FSP2151. Capacitors with larger values and lower ESR
provide better PSRR and line-transient response.
The FSP2151 is designed specifically to work with low ESR ceramic output capacitors in order to save space and
improve performance. Using an output ceramic capacitor whose value is >2.2μF with ESR>5mΩ ensure stability.
Shutdown Input Operation
The FSP2151 is shutdown by pulling the EN input low, and is turned on by tying the EN input to VIN or leaving the
EN input floating.
Dropout Voltage
A regulator’s minimum dropout voltage determines the lowest usable supply voltage. The FSP2151 has a typical
180mV dropout voltage. In battery powered systems, this will determine the useful end-of-life battery voltage.
Current Limit and Short Circuit Protection
The FSP2151 features a current limit, which monitors and controls the gate voltage of the pass transistor. The output
current can be limited to 300mA by regulating the gate voltage. The FSP2151 also has a built-in short circuit current
limit.
3/9
2007-7-4
DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6
FSP2151
„
TYPICAL PERFORMANCE CHARACTERISTICS
(CIN = 2.2uF, CO = 2.2uF, TA = 25°C unless otherwise specified.)
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2007-7-4
DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6
FSP2151
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TYPICAL PERFORMANCE CHARACTERISTICS(CONTINUED)
(CIN = 2.2uF, CO = 2.2uF, TA = 25°C unless otherwise specified.)
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2007-7-4
DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6
FSP2151
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TYPICAL PERFORMANCE CHARACTERISTICS(CONTINUED)
(CIN = 2.2uF, CO = 2.2uF, TA = 25°C unless otherwise specified.)
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2007-7-4
DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6
FSP2151
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TYPICAL PERFORMANCE CHARACTERISTICS(CONTINUED)
(CIN = 2.2uF, CO = 2.2uF, TA = 25°C unless otherwise specified.)
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2007-7-4
DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6
FSP2151
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TYPICAL PERFORMANCE CHARACTERISTICS(CONTINUED)
(CIN = 2.2uF, CO = 2.2uF, TA = 25°C unless otherwise specified.)
Turn-on Response
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ORDERING INFORMATION
FSP2151XXXX
Package:
U: USP6
„
Output Voltage:
(Out 1, Out 2)
A: 1.8V, 2.8V
B: 1.8V, 2.5V
Packing:
A: Tape & Reel
Temperature Grade:
D: -40~85℃
MARKING INFORMATION
xxv
YM
XX: Product code
V: Output voltage
(Out1; Out2)
A: 1.8V; 2.8V
B: 1.8V; 2.5V
Date code:
Y: Year (1=2001)
M: Month (1~9, O, N, D)
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DUAL 150MA HIGH PERFORMANCE MOBILE LDOTM IN USP6
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FSP2151
PACKAGE INFORMATION
2007-7-4
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